William atwood



W. ATWOOD.

Ore and Paint Separator.

Patented July 14, 1.868.

N* PETERS. PMWO'UTHDGA'PKER, WASHINGTON. D c. V

@man was anni ffice.

WILLIAM AVT'WOQD, 40F CAPE ELIZABETH, MAINE.A

"Lettera ParamA No. 79,802, daad Juzg 14, 186s.

IMBROVED MACHINE FOB. SEPARATING LIGHT FROM HEAVY PARTIGLBS 0F LITHARGE,PAINT, dto.

dlp .tlpmilt ninna tu ia ilgtse @tshirt aient ma mating and ai tigtsume.

TO ALL WHOM IT MAY CONCERN:

Bc it known thatl, WILLIAM ATWOOD, of Cape Elizabeth, in the countyoCumberland, and. State of Maine, have invented a new and useful Methodof Separating the Fine from the'Qoarse Particles ot Litharge and othersubstances; and I hereby declare the following to he a. full, clear, andexact descriptifonv thereof, which will enable others to make and use myinvention, reference being had to the accompanying drawings, formingpart of this spceication, in which- Figure 1 shows an end sectionalelevation.

Figure 2, a side sectional elevation.

Red lines denote tho plane of the section.

Same letters show like parts'.4

The operation of removing the impurities and coarser particles oflitha-rge, and like substances, is at presentr performed by exposingthem to the action of aswift current of water. d i I By this` method thencr andl purer portions are held in suspension in the water, while theeoarser particles quickly sink to the bottom.

The water, carrying withtit the line particlesfis then allowed to passinto a receptacle and settle, and then drained oil', leaving thesubstance purified in a wet state, and it is necessary to dry it beforeit isl ready for ,the market, I I

The objectV of my Invention is to obtain a method of refining andpuriiying s'uch articles, which will leave themin a merehantable state,without the after process of drying. This I do, by substituting for thecurrent of water a blast of air, which may carry withV it the lighterparticles, and deposit them, 4allowing the heavier parts to be drawn offin another direction.l This serves to eeonomize both time anblabor, anddoes not require water-power. i A

A reference to the drawings will show the parts of my device.

a, iig. 2, is a spout, through which the raw material is put intothcmachine. It there passes into the hollow cylindrical drum b, set on theshaft m, and which is provided with langcs c c c vc, (see fig. 1,) andisrevolved by a band-wheel, d, at the extremity of thc shaft m, whichrevolution generates centrifugal force inthe substance contained in thecylinder. This hollow drum is somewhat inclined, and at its lower end isplaceda second spout, through which the heavy portions of the ltlxarge,paint, the., fall into any convenient receptacle. The lighter parts areseparated from them by'the motion of the drum, and are thrown toward itscentre. Passing through the centre is a. p'owerfuhcurrent of air, put inmotion by the fan-wheelf onthe shaft n, and driven by the bandwhecl c.This blast or current follows the direction of the arrows down the tubeg, through the drum Z1, earryf ing with it the litharge oupaint to thehpper end of said drum, a'nd over into` the Vchamber 7i, when the iinelparticles are allowed to subside. When the-chamber isiilled-these-particles may be removed in a clean and dry condition,ready for transportation'and use. I

By. the centrifugal force, generated by the motionot` the.drumtheheavier portions of the litharge are driven to lthe sides, and are,moreover, disturbed and stirred by the ang'es c, these heavier portionsbeing outermost and the lighter nearer the `centre of the drum, andperhaps floating in the air. g

:The strong air-blast takes up a certain proportion-of these inerparticles, and carries them with it, as described.' The quantity takenup may be regulated with great nicety, -by increasing or diminishing theforce of the current of air from the fan-`wheel, bymakingit',regolvefaster-or'slower, as the case may be. It is obvious that, instead of therotary motion of. theV drum, a receptacle could be employed having anoscillating motion.

What I claim as my invention, and desire to secure by Letters Patent,s'- 1. -The combination of 'the fan-wheel f, tube g, and rotating-drumb, as and for the specified purposes. 2. The combination ofthe spout a,with the rotating-drum b, as and for the purposes set forth.

V3. In combination with thc fan-wheelf, tube g, and drum' b, alloperating as described, the deposit-chamber' h,`for the purposesdescribed.

4. Separating the'finer from the coarser particles of ltharge, ne., bymeans cfa current of air forced4 through a rotating-drum, Ste., andcarrying the said finer particles into a deposit-chamber, substantiallyas described.

WM. ATWOOD.'

Witnesses: y

W. H. Cmrroun, WM. FRANK Samar'.

